Ritchie becomes very attached to two baby ducks that were left over from a show and adopts them. Rob faces the task of making Ritchie understand the consequence of trying to keep pets that may be happier living in the wild.

Directed by Carl Reiner
Starring Dick Van Dyke, Mary Tyler Moore, Rose Marie

Cast
Dick Van Dyke as Rob Petrie
Rose Marie as Sally Rogers
Morey Amsterdam as Buddy Sorrell
Larry Mathews as Ritchie Petrie
Mary Tyler Moore as Laura Petrie
Richard Deacon as Mel Cooley